You can count me amongst that "we". I certainly don't like interviews that torture the candidate, and to be honest I think the bigger tech companies primarily use them as an to filter X-hundred candidates down to a more manageable number. But I do think find that assessing someone's ability can take a little more than a casual glance at their CV and a brief chat. If your interviewing strategy works for you - and it seems that it does - then more power to you.